Think about the skill / luck of that shot. At some distance.
I don’t doubt that LHO did the shooting by himself. I’m just saying that’s some hellacious marksmanship on a moving target at distance.
Some skill and luck were involved, but the distance isn't as far as it appears in the film. When I visited the museum in the Schoolbook Depository building and looked down at the "X" painted in the street below, it changed my perception of the event greatly.
The distance is marginal and Oswald was trained to shoot in the Marine Corps. He also missed the first shot completely.